Question: An electron is accelerated from rest by a potential difference of 390 V . It then enters a uniform magnetic field of magnitude 180 mT

An electron is accelerated from rest by a potential difference of 390V. It then enters a uniform magnetic field of magnitude 180mT with its velocity perpendicular to the field. Calculate the speed of the electron. 1.1710⁷m/s

Calculate the radius of its path in the magnetic field.

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